@Alex Appolonia I'm sure there are others here who have more detailed information on this, but in case no one responds, I can say this is an evolving area and your best bet is to contact the Narragansett and South Kingstown building officials.I know that in Narragansett regular rentals require an application/permit and it seems that short-term rentals do too but I can't seem to find the form for that on the town site and it may still be in-progress so I would recommend calling them.

It is a solid brick building, but the replacement cost shot up due to the change in supply chain and construction costs. 

it wil cost 500K but homes exactly like it or some with  less upgrades are selling for 650- 700K quickly     Should i get a regular mortgage and then do refinance cash out or is there a way of using hard money/ or other financing  and rolling that into a new loan after close.   

Over the the episodes from the past two weeks, David from the BiggerPockets podcast has brought up that real estate will be harder and harder to from the "small guy" to get into each year due to factors like: inflation, hedge funds being hyperactive in the market, the lack of supply and high demand causing an increasingly competitive market, real estate being a more attractive investment for our current economic condition, etc... 

Start saving up boxes, wide markers, tape, trash bags, cleaning supplies and hire help to start packing everything on day one after the eviction.

Are these tenants more risky than the regular SFH tenants, because they can't afford to rent SFH?

Michigan has no laws about appliances - not to be confused with mechanicals (furance & hot water heater).Your liability depends on what your lease states.Our lease states appliances are supplied for tenant convienence, but we don't have to fix them.Of course, tenants NEVER read their lease and alwasy seem to think they're staying in a hotel and a landlord has to do EVERYTHING for them.So, in realtiy, we fix appliances for good tenants so they stay.

Build costs are down from their high earlier in the year but supply chain issues are causing more price increases lately. 

I do that regularly here in Pinellas (Largo / Seminole especially). 

It is my understanding that in a normal rental where appliances are supplied and accepted, the tenant is responsible for any and all repairs to them (assuming it's in the agreement).